Police have released suspects in two violent incidents this weekend, after prosecutors declined to pursue the cases.

A third suspect – Dean Victor Matuu, 19, is expected to appear in District Court Monday morning after he was charged with second-degree murder Sunday in connection with the stabbing of his uncle during an argument Saturday morning in Pacific Palisades. Matuu’s bail was set at $250,000. Family members identified the victim as Frank Kapesi, 36, who lived with his nephew in the Pacific Palisades home where he was stabbed on Auma-kua Street.

Police released a 34-year-old man,  who was facing a second-degree murder charge in the stabbing death of his younger sister at her home in Wahiawa.

Police said the woman, 30, sustained a single stab wound to her torso at about 6 p.m. Saturday at her Nakula Street home. Paramedics took her to Wahiawa General Hospital, where she died.

A neighbor, who declined to give his name, recalled attending high school with the suspect and said he was quiet and kept to himself. He said the family has five siblings.

“I don’t think it was (the suspect)” who stabbed the woman, he said. “I don’t think he could do that to his sister.”

“They’re a good family,” the man added. “We’ve never had a problem with them before.”

Also released without charges Sunday was a  27-year-old homeless man accused of beating a 51-year-old man  Saturday in Chinatown. The suspect was arrested early Saturday morning on River Street on suspicion of  second-degree attempted murder.

The victim and the suspect fought sometime between 9:15 p.m. Friday and 1:40 a.m. Saturday when the victim was taken to the hospital. The victim was last listed in critical condition.